Railway switch and lock apparatus



(No Model.) 2 Sheets-Sheet 1.

H. S. PPEIL. RAILWAY SWITCH AND LOCK APPARATUS.

No. 463,543. Patented Nov. 17, 1891.

ZIIIB {No Model.) 2 Sheets-Sheet 2;

H. s. PFEIL. RAILWAY SWITCH AND LOGK APPARATUS. No. 463,543. PatentedNov. 17,1891.

llivrrn STATES ATENT mee.

HENRY S. PFEIL, OF PHILADELPHIA, PENNSYLVANIA.

RAILWAY SWITCH AND LOCK APPARATUS.

SPECIFICATION forming part of Letters Patent No. 463,543, dated November17, 1891.

Application filed August 3, 1891. Serial K0.401,5l9. (N0 model.)

new and useful Improvement in Railway Switch and Look Apparatus, ofwhich the following is a specification.

4 My invention relates to apparatus for operating and lockingrailway-switches, such apparatus being commonly known as aswitchand-lock movement.

The apparatus is one in which the switch is operated by a wide-mouth-jawbell-crank lever, which is moved and controlled by a slide connected tothe switch-lever and having a pin or friction-roller which plays betweenthe prongs of the jaw of the lever, the locking device also beingoperated from or by the slide. This, broadly considered, is not new withme.

Myinvention consists of a novel construction and arrangement of theoperative parts of the apparatus in order to secure compactness,simplify and cheapen the construction, facilitate the assembling andremoval or taking apart of the devices which make up the apparatus, andplace the locking devices properin a safe position and out of harms way.

The invention can best be explained and understood by reference to theaccompanying drawings, in which- Figure 1 is a perspective view of thatportion of the apparatus in which my invention is comprised. Fig. 2 is aplan of the same, showing also the connections of the lever and thelock-bar to the switch-points. Fig. 3 is a longitudinal section on line3 3, Fig. 2. Fig. at is a transverse section online 4: 4, Fig. 2.

A is the principal casting, which forms the base. It has end lugsD andD, in which are formed guideways for the slide 0, andin the lug D belowthe guideway for the slide is formed a transverse guideway or passagefor the sliding lock-bar E. Caps (1 cl, removably connected to the lugs,cover from above the portions of the slide 0, which are in the guidewaysin the lugs and render it easy to insert the slide in place or to removeit.

The slide 0 is provided with a pin H, which extends downwardly and hasmounted on it two anti-friction rollers J J. The roller J runs in aguide-groove A, formed for it in the base A. The other roller J is tooperate upon and engages the lock-bar.

.the lcver B. This lever is of the bell-crank or elbow kind and ispivoted to the base A.

One of its arms is connected in the usual way to the switch-points, asseen in Fig. 2. The other arm terminates in a jaw, which, as customary,is formed with a central curved recess 1, in which the rollerJ operatesin throw ing the lever, and with two prongs 2 3, against the straightedge of one orthe other of which the roller J travels after the throw ofthe lever and while the slide 0 is still moving in order to lock theswitch.

Upon the under side of the slide G are riveted or otherwise securedlocking-dogs G G, placed at the proper interval apart and arranged onenear one edge and the othernear the other edge of the slide 0. lVhen theslide is at either extreme of its movement, one of the locking-dogs isin engagement with the lock-bar, and the interval which separates thedogs is such that the slide in traveling to the opposite extreme willhave time to first disengage one dog from the lock-bar and then throwthe lever B before the other dog reaches The lock-bar is provided withnotches F F in its top edge, which are intended to receive the dogs G G,respectively. It is connected to the switchpoints in the usual way, asseen in Fig. 2,and derives its movement from these switchpoints, which,as they are shifted by lever B, move the lock-bar in one direction orthe other, according as they are thrown. It will be noted that by thisarrangement all parts of the locking mechanism are underneath and out ofharms way as far as possible.

The operation is as follows: In Fig. 2 the parts are in the positionthey occupy when 'the main track is clear, the dog G being in the notchF of the lock-bar E and the slide 0 at one extreme of its movement. theswitch the switch-lever in the tower is reversed, thereby drawing slide0 (which is connected to that lever by usual or suitable connection) tothe other extreme of its movement. The first portion of its movementwithdraws dog G from notch F, thus unlocking the switch. The secondportion of its movement throws the lever B, thus reversing the switchand moving the lock-bar so as to bring its notch F into line with dog G,and the concluding part of its movement brings To reverse the dog G intonotch F of the lock-bar, thns again looking the switch.

\Vhat I claim herein as new, and desire to secure by Letters Patten t,is-

1. The eonlbination'of the base, the wideinouth-jztw bell-crank leverfor throwing the switch-points, the slide moving in gnideways in thebase and provided with a stud or roller to operate the said lever andwith looking dogs on its under side, and the lock-bar contained in aguideway beneath and crosswise of the slide and provided with notches toreceive'the locking-dogs on the slide, these parts being constructed andarranged together substantially as and for the purposes hereinbefore setforth.

2. The base provided with a longitudinal EDGAR TAYLOR, J. BRUNNER.

